<!DOCTYPE html>
<html>
 <head>
  <title></title>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <style type="text/css">
    body {
      margin: 0;
    }
    #cnvs {
      border: #000000 1px solid;
    }
  </style>
  <script type="text/javascript">
    function init(){
      clock();
      setInterval(clock,1000);
    }
    function clock(){
      var now = new Date();
      var ctx = document.getElementById('cnvs').getContext('2d');
      ctx.save();
      ctx.clearRect(0,0,150,150);
      ctx.translate(75,75);
      ctx.scale(0.4,0.4);
      ctx.rotate(-Math.PI/2);
      ctx.strokeStyle = "black";
      ctx.fillStyle = "white";
      ctx.lineWidth = 8;
      ctx.lineCap = "round";

      // Hour marks
      ctx.save();
      for (var i=0;i<12;i++){
        ctx.beginPath();
        ctx.rotate(Math.PI/6);
        ctx.moveTo(100,0);
        ctx.lineTo(120,0);
        ctx.stroke();
      }
      ctx.restore();

      // Minute marks
      ctx.save();
      ctx.lineWidth = 5;
      for (i=0;i<60;i++){
        if (i%5!=0) {
          ctx.beginPath();
          ctx.moveTo(117,0);
          ctx.lineTo(120,0);
          ctx.stroke();
        }
        ctx.rotate(Math.PI/30);
      }
      ctx.restore();

      var sec = now.getSeconds();
      var min = now.getMinutes();
      var hr  = now.getHours();
      hr = hr>=12 ? hr-12 : hr;

      ctx.fillStyle = "black";

      // write Hours
      ctx.save();
      ctx.rotate( hr*(Math.PI/6) + (Math.PI/360)*min + (Math.PI/21600)*sec )
      ctx.lineWidth = 14;
      ctx.beginPath();
      ctx.moveTo(-20,0);
      ctx.lineTo(80,0);
      ctx.stroke();
      ctx.restore();

      // write Minutes
      ctx.save();
      ctx.rotate( (Math.PI/30)*min + (Math.PI/1800)*sec )
      ctx.lineWidth = 10;
      ctx.beginPath();
      ctx.moveTo(-28,0);
      ctx.lineTo(112,0);
      ctx.stroke();
      ctx.restore();

      // Write seconds
      ctx.save();
      ctx.rotate(sec * Math.PI/30);
      ctx.strokeStyle = "#D40000";
      ctx.fillStyle = "#D40000";
      ctx.lineWidth = 6;
      ctx.beginPath();
      ctx.moveTo(-30,0);
      ctx.lineTo(83,0);
      ctx.stroke();
      ctx.beginPath();
      ctx.arc(0,0,10,0,Math.PI*2,true);
      ctx.fill();
      ctx.beginPath();
      ctx.arc(95,0,10,0,Math.PI*2,true);
      ctx.stroke();
      ctx.fillStyle = "#555";
      ctx.arc(0,0,3,0,Math.PI*2,true);
      ctx.fill();
      ctx.restore();

      ctx.beginPath();
      ctx.lineWidth = 14;
      ctx.strokeStyle = '#325FA2';
      ctx.arc(0,0,142,0,Math.PI*2,true);
      ctx.stroke();

      ctx.restore();
    }
  </script>
 </head>
 <body onload="init()" >
 <div style="width:802px; height:520px; overflow:hidden;">
 	<canvas id="cnvs" width="800" height="500"></canvas>
 </div>
 <div id="points" style="width:600px;"></div>
 <a href="#" onClick="return c_zoom(1);">Plus</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 <a href="#" onClick="return c_zoom(-1);">Minus</a>
 <a href="#" onClick="return set_params({strokeStyle:'#ff0000'});">red</a>
 <a href="#" onClick="return set_params({strokeStyle:'#0000ff'});">blue</a>
 <a href="#" onClick="return set_params({strokeStyle:'#dddddd'});">gray</a>
 </body>
</html>